WASHINGTON — The recently completed final part of a road project in Northern Virginia will benefit walkers and bikers.

A new pedestrian bridge across Interstate 395 at Seminary Road in Alexandria opened Wednesday. The bridge, which is only for bikers and walkers, replaces the narrow sidewalks that used to carry them across Seminary Road.

Susan Shaw, director of the Virginia Department of Transportation’s Megaprojects, said that it’s a vital link for people trying to safely cross I-395 to get to a nearby hospital, apartment buildings and a large retail area.

The bridge is the last piece of a 3-year, $76 million project that includes a new high occupancy vehicle ramp from I-395 to Seminary Road, a new deck for the Seminary Road Bridge and an auxiliary lane on northbound I-395 between Duke Street and Seminary Road.